Home / 2,072.18-3,108.26-1,420.94

Finding the Fourth Proportional to 2,072.18, 3,108.26 and 1,420.94

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Solution

The fourth proportional to 2,072.18, 3,108.26 and 1,420.94 is: 2,131.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,072.18 : 3,108.26 = 1,420.94 : x
  2. Step 2: Convert to fraction form
    2,072.18/3,108.26 = 1,420.94/x
  3. Step 3: Cross multiply
    2,072.18x = 3,108.26 × 1,420.94
  4. Step 4: Simplify right side
    2,072.18x = 4,416,635.42
  5. Step 5: Solve for x
    x = 4,416,635.42/2,072.18
  6. Step 6: Final answer
    x = 2,131.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.